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You are given a vector in the xy plane that has a magnitude of 87.0 units...

You are given a vector in the xy plane that has a magnitude of 87.0 units and a y component of -56.0 units.

A) What are the two possibilities for its x component? Enter your answers using three significant figures separated by a comma.

B) Assuming the x component is known to be positive, specify the magnitude of the vector which, if you add it to the original one, would give a resultant vector that is 80.0 units long and points entirely in the −x direction.

C) Specify the direction of the vector. Express your answer using three significant figures.

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